I have a single cylinder Kawasaki FC540V-DS15 on a John Deere 325. It runs absolutely great for about 30 minutes under load then it will sputter for about two seconds and belch out oil smoke. It will clear up for about a minute then do it again and so on. Oil is entering the carb through the vent tube from the head. I have replaced the head gasket, same problem. No obvious problems with the valves. Fresh oil, 15W40 Rotella. I performed a leak down test. No leaks in the intake or...
Need new rings?
Need new rings?